hans@duttnph.tudelft.nl (Hans Buurman) (01/15/90)
I don't understand the following behaviour of ps (SunOs 4.0.1):
hans52> ps
PID TT STAT TIME COMMAND
23706 p0 S 0:03 -csh (csh)
23728 p0 R 0:00 ps
hans53> ps -c
PID TT STAT TIME COMMAND
23706 p0 S 0:03 csh
23731 p0 R 0:00 ps
hans54> ps 23706
PID TT STAT TIME COMMAND
23706 p0 S 0:03 -csh (csh)
hans55> ps -c 23706
ps: cannot open 23706: No such file or directory
This should be correct according to the manual, I think.
From the SunOS manual:
num A process number may be given, in which case the output
is restricted to that process. This option must also
be last.
It happens with other options as well.
Can anybody tell me whether this is a bug or a feature ?
Hans
(willing to summarise)
========================================================================
Hans Buurman | hans@duttnph.tudelft.nl | hans@duttnph.UUCP
Pattern Recognition Group | 31-(0)15-78 46 94 |
Faculty of Applied Physics | Delft University of Technologyjik@athena.mit.edu (Jonathan I. Kamens) (01/15/90)
In article <1072@dutrun.UUCP>, hans@duttnph.tudelft.nl (Hans Buurman) writes: > > I don't understand the following behaviour of ps (SunOs 4.0.1): > > hans55> ps -c 23706 > ps: cannot open 23706: No such file or directory > > This should be correct according to the manual, I think. > From the SunOS manual: > > num A process number may be given, in which case the output > is restricted to that process. This option must also > be last. The manual also says (at the top): SYNOPSIS ps [ acegklnstuvwxU# ] This means that the pid number should be part of the first argument passed to ps, not in a second argument. In other words, you should have typed: ps -c23706 I'm also not convinced that the '-' is even necessary, although it probably can't hurt. The error you received is due to the fact that if ps is given a second argument, it treats that argument as the file containing the system's namelist. Again, from the man page: A second argument is taken to be the file containing the system's namelist. Otherwise, /vmunix is used. A third argument tells ps where to look for core if the k option is given, instead of /vmcore. If a fourth argument is given, it is taken to be the name of a swap file to use instead of the default /dev/drum. Jonathan Kamens USnail: MIT Project Athena 11 Ashford Terrace jik@Athena.MIT.EDU Allston, MA 02134 Office: 617-253-8495 Home: 617-782-0710
hans@duttnph.tudelft.nl (Hans Buurman) (01/16/90)
In article <1990Jan15.094339.4254@athena.mit.edu> jik@athena.mit.edu (Jonathan I. Kamens) writes: > >In article <1072@dutrun.UUCP>, hans@duttnph.tudelft.nl (Hans Buurman) writes: >> >> I don't understand the following behaviour of ps (SunOs 4.0.1): >> >> hans55> ps -c 23706 >> ps: cannot open 23706: No such file or directory > The manual also says (at the top): > > SYNOPSIS > ps [ acegklnstuvwxU# ] > >This means that the pid number should be part of the first argument >passed to ps, not in a second argument. In other words, you should have typed: > > ps -c23706 Er, yes and no. You are quite right, ps -c23706 works perfectly. However, my SunOs 4.0.1 manual says: SYNOPSIS ps [ -acCegklnrStuvwxU ] [ num ] [ kernel_name ] [ c_dump_file ] [ swap_file ] Sun Release 4.0 Last change: 14 January 1988 1 So obviously, the manual is incorrect. You go on to explain why exactly we get this error message. Your explanation is no doubt correct, but again, you quote from a different manual. Which manual are you using ? Thanks for the reply, Hans >Jonathan Kamens USnail: >MIT Project Athena 11 Ashford Terrace >jik@Athena.MIT.EDU Allston, MA 02134 >Office: 617-253-8495 Home: 617-782-0710 ======================================================================== Hans Buurman | hans@duttnph.tudelft.nl | hans@duttnph.UUCP Pattern Recognition Group | 31-(0)15-78 46 94 | Faculty of Applied Physics | Delft University of Technology
jik@athena.mit.edu (Jonathan I. Kamens) (01/17/90)
In article <1073@dutrun.UUCP>, hans@duttnph.tudelft.nl (Hans Buurman) writes: > You go on to explain why exactly we get this error message. > Your explanation is no doubt correct, but again, you quote from > a different manual. Which manual are you using ? BSD 4.3. I should have mentioned that.... Jonathan Kamens USnail: MIT Project Athena 11 Ashford Terrace jik@Athena.MIT.EDU Allston, MA 02134 Office: 617-253-8495 Home: 617-782-0710